Hi from France.
I encounter a problem regarding the translation of some URLs.
Here is the problem.
The website is :http://www.irotras-productions.fr/
In the french version, from the menu "Boutique", you have :
- "Modèle réduit" which links to http://www.irotras-productions.fr/ip.wp/categorie-produit/modele-reduit/
- "Train réel" which links to http://www.irotras-productions.fr/ip.wp/categorie-produit/train-reel/
In the english version, from the menu "Shop", you have "Real train" and "Scale model" which point to the same links.
No problem because I entered the URLs by myself when creating the menus.
Now, I consider the Woocoomerce widget for "Product categories".
Since I installed WPML and Woocoommerce Multilingual, it is broken.
In the french version, it links to :http://www.irotras-productions.fr/ip.wp/product-category/XXX/
... and in the english version, it links to :http://www.irotras-productions.fr/ip.wp/en/product-category/XXX/
I do not understand how to configure somewhere that it must use "categorie-produit" and not "product-category".
Thanks for your advices !
Best regards.

Hi David.
Yes, everything is up-to-date : WordPress, Woocommerce, Woocommerce multilingual (2.2) and WPML (2.8.1).
David, if it can help you to identify the problem, I can give you an admin access to the website without any problem.
Thanks for your support.

Hi. I don't understand what is happening. I just added some new translations, clicked on some assistance buttons and now it seems that it works from the widget. So I have to corrected my custom menus to link from "categorie-produit" to "product-category". It's very confusing for me.

David, you pointed me in the good direction. I went in settings > permalinks and in the optional section (second one), I had for the product category base "product-category" and for the product tag base "product-tag". But it was written in grey, like a default value which could be replaced. So I rewrited here "product-category" and "product-tag" (in case of potential other issues with tags) and now, the good URLs contains "product-category" and no more this annoying "categorie-produit" that was brocking the product category widget in the sidebar.